Mixing machine



F. A. SCHLETZ MIXING MACHINE Nov. 26, 1935.

Filed Sept. 29, 1954 2 Sheens-Sheel: 1 1

F. A. SCHLETZ MIXING MACHINE Nov. 26, 1935.

Filed Sept. 29, 1934 2 Sheehs-She8t 2 Patented Nov. 26, 1935 UNITEDSTATES PATENT OFFICE MIXING MACHINE 9 Claims.

My invention pertainsto machines for mixing ingredients in theiroriginal containers and relates particularly to paint mixing machinesanti to can holdem therefor.

An object of the inventisn is to provide a simple, durable analefiicient mixing macbine including an oscillatory can holder of improvedcoustruction adapted readily so receive and. securely grip cans ofdifferent diameters, including cans with bails thereon.

Another object of the invention is to provide' a can holder of thepresent character including a supporting javv formed. With a she1fadapted' to receive the bailed end of a can and further' including acomplemental jaw, the shelf having a slot therein to receive the canbail and the jaws being formed with grooves to receive the bail ears onthe can and the adjacent portisns of the' bail.

A further object of the invention is t0 provide a .durable holder of thepresent character having simple and efiective jaw clamping meansconstructed and arranged so promote the balancing of the oscillatorystructure.

With the foregoing and other objects in view, which Will appear in thefollowing description, the invention resides in the novel combinationand arrangement of parts and in the details of construction hereinafterdescribed and. claimed.

In the dravvings, Fig. 1 is an elevational view of a mixing machineembodying my invention; Fig. 2 is a sectional view, taken as on the 1ine2-2 of Fig. l, With one of the case plates removed, said vievvillustrating the mechanism Within the case; Fig. 3 is an elevationalview in detail of one 0f the can holders, portions of the jaws beingbroken away to show themedial long1tudinal grooves in ehe faces thereof;Fig. 4 is a perspective view 0f the structure shown in Fig. 3, and Fig.5 is a perspective view, in detail, of the supporting jaw.

Referring 150 the drawings, Will be seen that the illustrated suructureincludes a base II), and Gase II thereon having end. plates I2, I3 and acover plate I4, the end plate I3 and cover plate I 4 being removablysecurecl the case proper. A rock-shaft I5, extencling through the case II and journaled in bearings I6 and I1 on the end plates I2 and I3,carries holders I8 and. I9 ab ehe ends thereof. Disposed chiefly wi.thinthe c-ase II and spanning the space between the end Walls I2, I3 of saidcase is an eccentric shaft 20, one end thereof being journaled in .abearing (not shovvn) 011 the inner face of the end plate -I3 the otherend. .thereof being journaled in a bearing 2I on the outer face of theend plate I2. Secured the outer end. of said. eccentrlc shaft 29 is apulley 22 which is connected through a hell; 23 With a drive pulley 24on Ehe armature shaft 25 of an electric motor 26 secured to the base IG.On the shaft 2B, Withl'n the case II, is an eccentric disk 21 encircledby an eccentric strap 28 formed With an elongated. boss 29 thereondisposed tangentially of said strap, said boss being formed With a borelongitudinally thereof. This boss 29 forms a bearing which slidably receives a rod or arm 33 depending from the rockshaft I5. Withtheec.centric shaft 29 connected With the rock-shaft I5 through theeccentric disk 21, eccentric strap 28 and arm 33, the -rock-shaft I5 isoscillated 130 -and fro when Ehe motor 26 is operated, the oscillationof said rockshaft being attended With an uneven motion characterized bya relatively quick throw of said shaft in one direction.

The holders I8 anti I9 are similar in construc tion, and a de.taileddescription 01 one thereof will apply the other. The holderconstruction, as best seen in Figs. 3 130 5, includes an elongatedstationary jaw 3I and an elongated complementa1 jaw 32, the former beingsecured 110 an end of the rock-shaft I5 in substantially upright positinby a mounting coupler consisting of a boss 33 With an upwardlyprojecting ear 34 anal a clepending ear 35. The boss 33 is keyed to therocksha:ft I .5 and. the ears 34, 35 are bolted t0 the jaw 3I 'by bolts36, as shown. Projecting from the face of the supporting jaw 3I a1; Ehelovver end ther.eof is a she1f 31. Thisshelf is formed with a s1ot 38.centrally longitudinally thereof and the jaw 3I is formed With a groove39 likewise centrally longitudinally thereof, both slot and groove beingintercepted medially thereof by a plane common thereto and whichintercepts the axis of the rock-shaft I5. The slot 38, shown as beingopen ended at the unter end of said shelf 31, is cut back at its otherer inner end. 130 the fu11 depth 0f the groove 39 in ehe jaw proper.

The jaw 3I is -arcuate in transverse cr.oss section, the face thereofbeing symmetrically formed with longitudinal ribs 40 at either side ofthe grooxze 39, the corresponding ribs constituting paired contactingridges for engagement with the cylindrical surfaces of cans of differentsizes placed -on end upon the shelf 31. Between the upper and lower endsof the supporting jaw 3I and extending from the sides thereof areopposedears 4I from which threacled guide rods 42 extend outwarclly inparallelism with the shelf 31.

The complemental jaw 32 is substantially of the same construction as thesupporting jaw 3l it being formed at its arcuate face with a centrallongitudinal groove 43 and longitudinal ribs 44 and at its sides withopposed ears 45. These ears 45 have bores or guideways therethroughwhich slidably receive the guide rods B2, said guide rods being providedwith finger nuts 46 threaded thereon and adapted to be turned againstsaid ears 45 cf the jaw 32 to clamp the face thereof against a can and,in turn, clamp the can against the face of the supporting j-aw 3l.

In the use of noy maehine, the finger nuts 46 are, at the outset, turnedback on the guide rods 42 to permit of the retraction thereon of the jaw 32 sufiiciently to allow the insertion of a can, bail end down,between the jaws 3l, 32 theretraction of the jaw 32 being facilitatedthrough the use of a finger pieee 41 located at the back of the jaw 32between the ears 45. Upon applying a can, as at 48, to the jaws 3I, 32of the holder, it will be disposed in such angular relation with respectto said jaws that the bail, as at 49, will thread through the slot 38 inthe shelf as the can is lowered to the shelf. In this relation of thecan, the bail ears, as at 50 (Fig. 3), are brought opposite the grooves39, 43 in the jaws 3l, 32 and are received within said grooves togetherwith adjacent portions of the bail 4l9 when the jaws are clamped againstthe can. In thus clamping said jaws, it is only necessary to turn andadvance the lnger nuts 4@ on the guide rode A2, said nuts in such eventbeing brought againsc the ea1s 45 of the jaw 82, With the result thatsaid jaw is clamped against the can and the can, in turn clamped.against the supporting jaw 3l. 'Ihe threading of the bail 49 in theslot 38 in the shelf 37 disposes the can on end, upside down, in whichposition thereof, the most eifective mixing action may be had. Also, indisposing the can 48 With the bail threaded in said slot, the ears 53 ofthe can are direeted into the medialgrooves 39, 43 oi the closing jaws3l, 32 and thus protected against injurious contact with the faces ofsaid jaws. Furthermore, the bail 49 is br-aced in the slot against anyhinging movement relative to the can.

With a can clamped in a holder, the motor 26 is started, a rapidoscillation of the rock shaft I5 and oi the holder thereupon takingplaoe and efiecting a quiok and thorough mixing of the contents oi thecan. As a safety fe-ature, I provide at least one of the jaws 3l, 32with an ear 5l projecting from the face thereof at itsupper end andwhich serves as a limit stop or abutment to engage the upper end of acan and pre vent it from creeping out between the jaws should any suchtendency occur in the mixing oper-ation. In the drawing, both of thejaws 3I, 32 are shown as provided With ears 5I. Upon completing a mixingoperation, the finger nuts 46 are turned back on the guide rode 42 andthe jaw 32 retracted through the employment of the finger piece l,whereupon the can may be lifted from the holder.

From the foregoing, it will be understood that the present machineconstitutes a simple, durable and effective device for mixingingredients in their containers and partioul-arly paint in original cansincluding those of the larger sizes fitted With bails. Also, it Will beunderstood that the holder construction is conducive to the rapidapplication of containers thereto and the similarly rapid removal ofcontainers therefrom. Further,

it Will be understood that the present holder construction remainssimilarly balanced in all of as new and desire to protect by LettersPatent is: m

1. In a mixing machine, a horizontally disposed power driven rock-shaft,a holder including'an elongated supporting jaw secured medially at theback thereof and between its ends to an end of said rock-shaft in asubstantially upright l position, a can supporting shelf projectingoutwardly from the face of said jaw at the lower end thereof, said shelfbeing formed with a medial longitudinal slot therein said face beingtransversely concave and formed With a medial longi- S tudinal groovetherein and also with longitudinal ribs symmetrically disposed'atopposite sides of said groove, the various corresponding ribs presentingpaired .abutment surf-aces for cylindrical cans of different diametersthe middle of said groove and the middle 'of said slot being in a commonplane intersecting the axis of said shaft, the slot being adapted toreceive the bail of a can resting upside down on said shelf and thegroove being ad-apted to receive a bail ear of the can and an adjacentportion of the bail, threaded guide rods secured to the opposite sidesof the supporting jaw,a complemental jaw similar to said supporting jawslidably guided on said rode and movable therealong toward and from thesupporting j-aw in facing relation With respect thereto, and finger nucson said rods for clamping the complemental jaw against a can on saidshelf and, in turn, clamping said can against said supporting jaw.

2. In a mixing machine, a horizontally disposed power driven rock-shaft,a holder including an elongated supporting jaw secured medially at theback thereof and between its ends to an end of said rock-shaft in asubstantially upright position, a can supporting shelf projecting01'1twardly from the face of said jaw at the lower end thereof, saidshelf being formed With a medial longitudinal slot therein, said facebeing transversely concave and iormed with a medial longitudinal groovetherein, the middle of said groove and the middle of said slot being ina. common plane intersecting the axis of said shaft, the slot beingadapted to receive the bail of a can resting upside down on said shelfand the groove 5 being adapted to receive a bail ear of the can and anadjacent portion of the bail, a complemental jaw similar to saidsupporting jaw, means carried b y the supporting jaw and movablysupporting the complemental jaw, and means for clamping the complementaljaw against a can on said shelf and, in turn, clamping said can againstsaid supporting jaw.

3. In a mixing machine, a horizontally disposed power driven rock-shaft,a holder including an elongated supporting jaw secured medially at theback thereof and between its ende to an end of said rock-shaft in asubstantially upright position, a can supporting shelf projectingoutwardly from the face of said jaw als the lower end thereof, saidshelf being formed with a medial longitudinal slot therein, said facebeing transversely concave and formed With a medial longitudinal groovetherein, the middle of said groove and the middle of said slot being ina common plane intersecting the axis of said shaft, the slot beingadapted to receive the bail of a can resting upside down on said shelfand the groove being adapted to receive a bail ear of the can and anadjacent portion of the bail, a complemental jaw similar to saidsupporting jaw, means carried by the supporting jaw and movablysupporting tlie complernental jaw, and means for elamping thecomplemental jaw against a can an said shelf and, in turn, clamping saidcan againsi; said supporting jaw, said means for supporting saidcomplemental jaw comprisv ing two members seeured to opposite sides ofthe.

supporting jaw and said clamping means including elements incorporatedWith said supporting members.

4. In a mixing machine, a horizontally disposed power driven rock-shaft,a holder including an elongated supporting jaw secured medial- 1y at theback thereof and between its ends an end 0f said rock-shafi: in asubstantially upright position, a shelf projecting outwardly from theface of said jaw at the lewer end thereof, said jaw being forxned Withoppositely projecting ears at the sides thereof, threaded guide rodesecured to said ears on the supporting jaw, said shelf being adapted sosupport a can in position between said guide rode, a complernental jawhaving opposed. ears thereon slidably guided on said rods and movabletherealong toward and from the supporting jaw in facing relation Withrespect thereto, finger nuts on said rods adapted 130 engage the ears onsaid complemental jaw and clamp the same against a can 0n said shelfand, in tu1n, clamp said can againsc said supporting 3aw.

5. In a mixing inachine a horizontally disposed power driven roek-shaft,a holder inoluding an elongated supporting jaw securecl medially at theback thereof and between its ends to an end of said rock-shaft in asubstantially upright position, a can supporting shelf projectingoutwardly flom the face of said jaw ab the lower end thereof, said shelfbeing formed with a medial longitudinal slot therein, said face beingtransversely concave and formed With longitudinal ribs symmetricallydisposed at opposite sides of a medial line longitudinally of said face,the various corresponding ribs presenting paired ahntrnent surfaces forcylindrical cans of diiferent diameters, said medial line 01 said faceand said slot lying in a plane inbersecting the axis of said sl1aft, tneslot being adapted to receive the bail 0I" a can resting upside down onsaid shelf and the space between the inner pair of ribs being adapted toreceive a bail ear of the can and an adjaeeni; portion of ehe bail, acomplernental jaw, means carried by t he supporting jaw and movablysupporting said complemental jaw, and means for clamping thecomplemental jaw against a can on said shelf and, in turn, clamping saidcan against said supporting jaw.

6. In a mixing maehine, a horizontally dis posed power drivenrock-shaft, a holder including an elongated supporting jaw secnredmedially a1; the back thereof and between its ends to an end of saidrock-shaft in a suhstantially upright position, a can supporbing shelfprojecting entwarclly f101n Ehe face cf said jaw at the lower endthereof, said shelf being formed with a medial longitudinal slottherein, said face being transversely concave and formed With a mediallongitudinal groove therein, the middle of said groove and said slotbeing in a common plane intersecting the axis 0I" said shaft, the slotbeing adapted to receive the bail of a can resting upside down on saidshelf and ehe groove being adapted 5 to receive a bail ear of the canand an adjacent portion of the bail, a complemental jaw similar 1:0 saidsupporting jaw, means cariied by the supporting jaw and movablysupporting the complemental jaw, and means for clamping the comple- 1mental jaw against a can 011 said shelf and, in turn, clamping said canagainst said supporting jaw, one of said jaws having a lug projectingoutwardly from the upper edge thereof and constituting an abutment forkeeping a can from 1 creeping out of ehe grip of said jaws. 7. In amixing machine, a horizontally disposed power driven rock-shaft, aholder including an elongated supporting jaw secured medially at theback thereof and between .its ends to an 2 end of said rocbshaft in asubstantially uprighi: position, a can supporting shelf projectingoutwardly from ehe face of said jaw ab ehe lower end thereof, said shelfbeing Iorn1ed with a medial longitudinal slot therein, said face beingtrans- 25 versely concave and formed With a medial longitudinal groovetherein, ehe middle of said groove and said slot being in a common planeintersecting ehe axis, 01 said shaft, the slot being adapted to receivethe bail of a can resting upside down on said shelf and the groove beingadapted so receive a bail ear of the can and an adjacent portion of thebail, a complemental jaw similar 120 said supporting jaw, means carriedby the supporting jaw and movably supporting the com- 3 plemental jaw,and means f01' clamping the complemental jaw against a can on said shelfand, in turn, clamping said can against said supporting jaw, one of saidjaws having a medially disposed lug projecting outwardly from ii;s faceab the up- 4 per portion thereof and constituting an abutment forkeeping a can from creeping out of the grip of said jaws.

8. In a mixing machine, a rock-shaft, a holder including a supportingjaw secured said rock- 4 shaft, a can supporting shelf projecting fromsaid jaw, a pair 0f spaced guides, each secured at an end thereof tosaid supporting jaw and supported thereby, a complemental jaw mounted 0nsaid guides and movable therealong toward and from the supporoing jaw infacing relation with respeet thereto, and means carried by said guidesand cooperating therewitn and With said complemental jaw to clamp thelatter against a can on said shelf and, in turn, to clamp said canagainst said supporting jaw, said guides constituting side retainers fora can resting 011 said shelf.

9. In a mixing machine, a power driven rockshaft, a holder inclnding asupporting jaw secured to said rock-shaft, a can supporting shelfprojecting from said jaw, a complemental jaw, means car1ied by saidsupporting jaw and movably supporting said complemental jaw, and meanscarried by said jaw supporting means and cooperating therewith to clampthe complemental jaw against a can on said shelf and, in turn, clampsaid can against said supporting jaw, said jaw supporting means andclamping means being arranged partly on one side and partly on theopposite side of the position oecupied by a can 70

